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热力采油是一类利用热量稀释和蒸发油层中原油的采油方法的统称。热力采油是稠油油藏提高采收率最为有效的方法。目前成熟的开采技术以水蒸汽为主要热介质的蒸汽吞吐和蒸汽驱。蒸汽吞吐开采稠油时,只能采出油井井筒附近地层中的原油,而井间仍有大量的稠油未采出。蒸汽吞吐后进行蒸汽驱开采,可以使一部分井间地层中的原油采出地面,可进一步提高稠油的采收率。
Thermal oil production is a generic term for a type of oil recovery method that uses heat to dilute and evaporate crude oil in an oil layer. Thermal oil recovery is the most effective method for oil recovery in heavy oil reservoirs. Currently mature mining technology to steam as the main heat medium steam huff and steam flooding. When steam huff and puff is used to produce heavy oil, only crude oil in the formation near the oil well shaft can be taken out, and a large amount of heavy oil still remains in the well. After steam huff and puff, steam flooding can make part of the crude oil in the cross-strata strata to be taken out of the ground, which can further increase the recovery of heavy oil.